Planer



Aug. 31, 1948. .1. MwALn-:R

PLANER n Filed May 51J 194e 3 INVENTOR.

Jon/v' M ML75/. n

www

ATTORNEYS.

Patented Aug. 31, 1948 J 01m-M. Walter, Cincinnati, Ohio, assignor toThe i G. A. Gray Company, Cincinnati, Ohio, a corporation of Ohio`Applicatidnrray 31, 1946, 'serial No. 673,692(

" f 7 Claims.

, My invention relates towdevices' for frestor'ing planertable'sf` intodriving relation to the' bull gear of tl'ieplaner drive, on occasionswhen," the ltable runspi. 'the bull gear. Itis not lan infrequentcondition for the'controls of metal planers to perlmitqthetable, while`still supported onlthe ways, to 'move `,beyonda position ofy mesh,between the rackpnthe table'fand the bull 'gear element'of the drive. cI

To slidey the tables back into mesh position with thebull gear'undersuch. circumstances is a difilcult` operation requiring several'iinenand such l,equipment as a crane or a block and tackle, more partieularlyY 'in large planers. Even with this equipment which requires timeto bring it, into position, a close and accurate remeshing is im.-lperative. As will be illustrated in a sketchin the drawings, ifaccurate mesh is not obtained as the table is manipulated back intoposition, the initial operation ofthe bull gear. is likely, .if it doesnot break the teeth of the gear4 or on'the rack,-to exertsuchforce asactually to break the planer bed orA the supports for the planer drive.

An objectfof the present'invention is to so arrange that the bull gearis available for pulling stood that this is but one specic form which myinvention may take, and that the novelty inherent in the invention issetforth in the appended claims, to which reference is hereby made.

In the drawings:

Figure 1 is a plan view of one end of a planer bed with the newattachment in place, the table being beyond position of mesh between itsrack and the bull Wheel.

Figure 2 is an end elevation of the parts shown l in Figure 1 on theline 2-2, of Figure 1.

Figure 3 is a side view on the line 3-3, of Figure 1.

Figure 4 is a perspective of the pull rack. Figure 5 is a perspective ofthe guide bar.

Figure 6 is a diagram illustrative of the importance of accurate meshbetween the table rack and the bull gear, which was noted briefly above.

Referring to Figure 6 there is indicated the teeth A of a bull Wheel,and the teeth B of the rack-on a planer table. One tooth A is shown or.break the drive from its moorings 'on the pfthe planer.v ,c

' My invention avoids any such effects. j

In the views of Figures 1, 2, and 3, the bed of a planeris indicatedatI, the table ati', and the bull gear at 3. Beneath the table is a rack 4which/meshes withthe bull gear Wherebythe table is caused .to move toandfr'oon the bed. The bed has Ways 5in which rest the Vs 6 of the planertable, and one form of bed construction includes inwardly projectingflanges 1 which'are normally engaged by flanges on the table to takelside thrust and to hold the table down. Other means lengthwise ofthebed to provide for hold down and said thrust, if used, would requireobviousmodification of the guide bar element of myattachment.

This guide bar` asshown at 8, has reduced ends 8 and I0 which engagebeneath the ilanges 'I on the bed, with the walls or shoulders definingthe reduced, ends engaging the inwardly projecting faces `of the`flanges. '1.l This guide bar has a recess I I on its under side toaocommodatethe pull rack... I,

'lhefpull. rack I2 has rack teeth I3 thereon matching exactly those onthe bottom of the table. It has a reduced end I4 which will be locatedin the recess II in the guide bar, the Wall or shoulder defining thisreduced end I4 abutting against the one edge of the guide bar. The pullrack has also a tongue I5, and the planer table has a slot into whichthis tongue will project. When the tongue is thrust home into the slotso that its defining wall (on the under side of the pull rack) abutsagainst the wall about the planer table slot, the teeth on the pull rackwill match up with those on the rack forming a per- -rfect continuationof the table rack teeth. A lug I6 is formed on the top of the pull rackand a bolt I'I passes through this lug and threadably engages in asuitable hole in the end of the planer table.

While the guide bar and pull rack are shown as separate pieces, theycould be a single piece. As already noted the guide bar may take anyshape suitable for engaging the guides on the planer bed, normally usedfor the table.

In use, when the table runs off of the bull gear, it is normally broughtup against a stop which prevents it from leaving the bed and while itremains still in engagement with the guides and ways so as to behorizontal. rIhe operator then inserts the guide bar into engagementwith the table guides on the bed, inserts the one end of the pull rackinto the recess on the under side of the guide bar and places the rackteeth on the pull rack into proper mesh with the bull gear and the [sametime thrust the tongue on vthe pull r-ack into the slot in the planertable. gear is then inched around by small increments so as to thrustthe tongue on the pull rack homer in the planer table whereupon the boltl1 is placed and tightened down.

With the parts so arranged, the guide ybar will hold the pull rack inposition and the bull gear may be inched around in small incrementswhich will pull the planer table toward lmeshing po-v sition. When itreaches meshing position there is no danger of the planer table rackteeth being .out of mesh with the bull gear teeth, l Thus in a minute orso a single operator is enabled to replace this planer table vintooperation laft/er .an accidental run-off While the guide bar has beendesigned in the example shown so as to slide on the guides for The bull'Y ibeyond the same for engaging the side thrust 'the table, it would beentirely possible vto provide =for separate guiding means secured vto.the .bed in some Way whereby the ,guide bar `wiou'l'd'be guided ,in .alike manner. except for reconomy o'f structure wouldbe a bracket 'boltedto the .bed in a, position to clear the table when in use. y

Having thus described my invention, What I claim as new and desire ytovsecure by Letters Patent 'ist `1. A planer table restorer for ta planerhaving a ,bed provided with a bullA wheel 'and 'carrying 'atableprovided with a rack arranged 4to mesh with said bull wheelcomprising a guide element 'arranged to slida'bly engage and `be guidedby elements on the bed, a rack bar `element Aengaging said 'guideelement, said rack bar element having teeth corresponding to those onthe'tab'le rackfand having kmeans vfor engaging it VWith theftable in'such position that vits teeth form 'a continuation of the table rackteeth.

2. 'The combination of claiml in which'the engaging means between thetable and the rack bar Aelement includes a sliding element 'and sockettherefor, whereby the rack bar element may Ebe placed in properengagement withthe bull wheel Thus -the equivalent, i.,

.and 1hold down ffianges on the plane bed.

having side thrust and hold-down anges, in which the r-guide element hasits side edges arranged with sl'xoulders and reduced projections beyondthe same for engaging the side thrust and hold down flanges on theplaner bed and is recessed on its underside for reception ofthe 4end of'the rackbar element, the end of sa'idrackbar 'element having a shoulderand a projection he- `yond said shoulder to engage in said recess.

'6. 'The combination of claim `1 in which 'the guide element isindependent ofthe rack'bar `element, and has a socket and shoulderedtongue detachable connection .with 'the rack bar element.

"'7. A restoring device 'for' planer tables in planershaving a bed withgui-des, anda table provided with a rack comprising la rack 'bar havinga'reduced thickness tongue at one end, and alug lat said end havingpassage vfor a securing bolt, said rack 'bar .having a reduced tongue at'the other end, and a guide bar having reduced ends to engage the bedguides for the planer table, :and a .socket `i'or'the reduced tongue atsaid other end of the rack bar, the teeth on 'therack bar being 'soarranged that `-its teeth will Aform a perfect continuation of .the'teeth ofthe :rack on said ta'ble when the vlug is bolted home .against'the planer table.

JOI-IN WALTER.

REFERENCES CITED The following references vare nof record "in .the `levof .this patent:

UNITED STATES V*PAF-EENTS Number

